How to create a character variable with numbers in values gradually increase?

[Therain]

Hello,

I have a data set but without the study ID. In total there are 289 study subjects and I want to create a variable called "studyid" for each of them like this:

studyid

id-001

id-002

...

id-289.

I have searched many files but still cannot figure out the way. Does anyone can offer me some suggestions? Thank you!

[ChrisBrooks · Accepted solution]

Simple example

data class;
	length id $6;
	set sashelp.class;
	id=cat("id-",put(_n_,z3.));
run;

[Therain]

Thank you Chris! That works perfectly!